javamission.com

Struts 1.2/1.3 :

In the bellow code sample I tried to show a simple login and registration system.Struts framework was used for implementing MVC. For Persistence layer implementation i used the Hibernate.

First Let us see Implementation of MVC using Struts framework.

Here for the view part of the MVC i am using loginForm. jsp, loginSuccessful.jsp, loginCancel.jsp ,loginFailed.jsp , logout.jsp as a part of login process and SignUp.jsp , SignUpSuccessful.jsp ,& signUpCancel.jsp for SignUP/Registration process.

Here i would like to say one important point , From the Software Systems point of view we say SignUp as a process of User Authentication and the login as a process of user Authorization.

Bellow i am listing out the code for all the above said view's first all SignUp process related views and followed by all login related view. Here the point is in order to do login one must have done SignUp first .

Out put image of SignUp.jsp

imp1

SignUp.jsp source code:

<!-- 
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>SignUp </title>
    </head>
    
             <html:link action="/startlogin">Login</html:link>         
             <html:form action="signUp">
            <table border="0">
            <thead>
                <tr>
                    <th><h1>Sign Up</h1></th>
                    
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td>First Name</td>
                    <td><html:text property="firstName" /></td>
                </tr>
                <tr>
                    <td>Middle Name/Initial</td>
                    <td><html:text property="middleName" size = "20" /></td>
                </tr>
                <tr>
                    <td>Last Name</td>
                    <td><html:text property="lastName" /></td>
                </tr>
                <tr>
                    <td>User Name</td>
                    <td><html:text property="userName" /></td>
                </tr>
                <tr>
                    <td>Password</td>
                    <td><html:password property="password" /> </td>
                </tr>
                <tr>
                    <td>Retype Password</td>
                    <td><html:password property="retypedPassword" /> </td>
                </tr>
                <tr>
                    <td>Present Address</td>
                    <td><html:textarea property="presentAddress" value="" /> </td>
                </tr>
                <tr>
                    <td>Permanet Address</td>
                    <td><html:textarea property="permanentAddress" value="" /> </td>
                </tr>
                <tr>
                    <td>Contact Number</td>
                    <td><html:text property="contactNumber" /></td>
                </tr>
               
            </tbody>
        </table>
            
            <html:submit value="Sign Up" />
            <html:reset />
            <html:cancel />
        <html:errors />    
        </html:form>
        
        
        
        
  -->

SignUpSuccessful.jsp ,& signUpCancel.jsp source code are very simple i am not displaying them if you want you can download the entire project code sample from the code samples tab.

Out put image i loginForm.jsp

loginFormImage

Source Code for loginForm.jsp

Struts Configuration File: struts-config.xml

<!--
<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">
<struts-config>
    <form-beans>
        <form-bean name="LoginFormBean" type="login.LoginFormBean"/>
        <form-bean name="LoginFormBean" type="com.myapp.struts.LoginFormBean"/>
        <form-bean name="SignUpFormBean" type="com.myapp.struts.SignUpFormBean"/>

    </form-beans>
    <global-exceptions>
    </global-exceptions>
    <global-forwards>
        <forward name="welcome"  path="/Welcome.do"/>
    </global-forwards>
    <action-mappings>
        <action input="/loginForm.jsp" name="LoginFormBean" path="/login" scope="session" type="com.myapp.struts.LoginAction">
            <forward name="success" path="/loginSuccessful.jsp"/>
            <forward name="cancel" path="/loginCancel.jsp"/>
            <forward name="falied" path="/loginFailed.jsp"/>
            <set-property property="cancellable" value="true"/>
        </action>
        <action forward="/SignUp.jsp" path="/signup"/>
        <action forward="/loginOut.jsp" path="/logout"/>
        <action path="/Welcome" forward="/welcomeStruts.jsp"/>
        <action input="/SignUp.jsp" name="SignUpFormBean" path="/signUp" scope="session" type="com.myapp.struts.SignUpAction">
            <forward name="success" path="/SignUpSuccessful.jsp"/>
            <forward name="cancel" path="/signUpCancel.jsp"/>
        </action>
        <action forward="/loginForm.jsp" path="/startlogin"/>
        <action forward="/loginForm.jsp" path="/trylogin"/>
    </action-mappings>
    <controller processorClass="org.apache.struts.tiles.TilesRequestProcessor"/>
    <message-resources parameter="com/myapp/struts/ApplicationResource"/>    
    
    
</struts-config>
 
-->

Code of Properties File:

errors.header=
errors.prefix=<span style="color: red" >
errors.suffix=</span>
errors.footer=
errors.invalid={0} is invalid.
errors.maxlength={0} can not be greater than {1} characters.
errors.minlength={0} can not be less than {1} characters.
errors.range={0} is not in the range {1} through {2}.
errors.required={0} is required.
errors.byte={0} must be an byte.
errors.date={0} is not a date.
errors.double={0} must be an double.
errors.float={0} must be an float.
errors.integer={0} must be an integer.
errors.long={0} must be an long.
errors.short={0} must be an short.
errors.creditcard={0} is not a valid credit card number.
errors.email={0} is an invalid e-mail address.
errors.cancel=Operation cancelled.
errors.detail={0}
errors.general=The process did not complete. Details should follow.
errors.token=Request could not be completed. Operation is not in sequence.
welcome.title=Struts Application
welcome.heading=Struts Applications in Netbeans!
welcome.message=It's easy to create Struts applications with NetBeans.
login.name=User Name.
login.password=Password.
error.name.required=Please enter user name !.
error.username.required=User name is requied....!
error.password.required=Password is required...!
error.retypedPassword.required=Retype password is required.
error.missmatch=Passwords not matched!
error.login.username.required=User Name Required...!
error.login.password.required=Password Required...!

Source Code for SignUpFormBean:

<!--
package com.myapp.struts;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

/**
 *
 * @author Murali
 */
public class SignUpFormBean extends org.apache.struts.action.ActionForm {
    
   private String name; 
    private String userName;
    private String permanentAddress;
    private String contactNumber;
        private String presentAddress;
    private String retypedPassword;

    /**
     * Get the value of retypedPassword
     *
     * @return the value of retypedPassword
     */
    public String getRetypedPassword() {
        return retypedPassword;
    }

    /**
     * Set the value of retypedPassword
     *
     * @param retypedPassword new value of retypedPassword
     */
    public void setRetypedPassword(String retypedPassword) {
        this.retypedPassword = retypedPassword;
    }

    /**
     * Get the value of presentAddress
     *
     * @return the value of presentAddress
     */
    public String getPresentAddress() {
        return presentAddress;
    }

    /**
     * Set the value of presentAddress
     *
     * @param presentAddress new value of presentAddress
     */
    public void setPresentAddress(String presentAddress) {
        this.presentAddress = presentAddress;
    }


    /**
     * Get the value of contactNumber
     *
     * @return the value of contactNumber
     */
    public String getContactNumber() {
        return contactNumber;
    }

    /**
     * Set the value of contactNumber
     *
     * @param contactNumber new value of contactNumber
     */
    public void setContactNumber(String contactNumber) {
        this.contactNumber = contactNumber;
    }

    /**
     * Get the value of permanentAddress
     *
     * @return the value of permanentAddress
     */
    public String getPermanentAddress() {
        return permanentAddress;
    }

    /**
     * Set the value of permanentAddress
     *
     * @param permanentAddress new value of permanentAddress
     */
    public void setPermanentAddress(String permanentAddress) {
        this.permanentAddress = permanentAddress;
    }

    private String password;
    private String currentAddress;

    /**
     * Get the value of currentAddress
     *
     * @return the value of currentAddress
     */
    public String getCurrentAddress() {
        return currentAddress;
    }

    /**
     * Set the value of currentAddress
     *
     * @param currentAddress new value of currentAddress
     */
    public void setCurrentAddress(String currentAddress) {
        this.currentAddress = currentAddress;
    }

    /**
     * Get the value of password
     *
     * @return the value of password
     */
    public String getPassword() {
        return password;
    }

    /**
     * Set the value of password
     *
     * @param password new value of password
     */
    public void setPassword(String password) {
        this.password = password;
    }

    /**
     * Get the value of userName
     *
     * @return the value of userName
     */
    public String getUserName() {
        return userName;
    }

    /**
     * Set the value of userName
     *
     * @param userName new value of userName
     */
    public void setUserName(String userName) {
        this.userName = userName;
    }

   private String firstName;
    private String lastName;

    /**
     * Get the value of lastName
     *
     * @return the value of lastName
     */
    public String getLastName() {
        return lastName;
    }

    /**
     * Set the value of lastName
     *
     * @param lastName new value of lastName
     */
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }


    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    private String middleName;

    /**
     * Get the value of middleName
     *
     * @return the value of middleName
     */
    public String getMiddleName() {
        return middleName;
    }

    /**
     * Set the value of middleName
     *
     * @param middleName new value of middleName
     */
    public void setMiddleName(String middleName) {
        this.middleName = middleName;
    }

   
   private int number;

   /**
    * @return
    */
   public String getName() {
       return name;
   }

   /**
    * @param string
    */
   public void setName(String string) {
       name = string;
   }

   /**
    * @return
    */
   public int getNumber() {
       return number;
   }

   /**
    * @param i
    */
   public void setNumber(int i) {
       number = i;
   }

   /**
    *
    */
   public SignUpFormBean() {
       super();
       // TODO Auto-generated constructor stub
   }

   public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {
       ActionErrors errors = new ActionErrors();
       if (getUserName() == null || getUserName().length() < 1) {
           errors.add("userName", new ActionMessage("error.username.required"));
           // TODO: add 'error.name.required' key to your resources
       }
       else if (getPassword() == null || getPassword().length() < 1) {
           errors.add("password", new ActionMessage("error.password.required"));
           // TODO: add 'error.name.required' key to your resources
       }
       else if (getRetypedPassword() == null ||getRetypedPassword().length() < 1) {
           errors.add("retypePassword", new ActionMessage("error.retypedPassword.required"));
           // TODO: add 'error.name.required' key to your resources
       }
       else if ( !getPassword().equals( getRetypedPassword() )   ) {
           errors.add("passwordMismatch", new ActionMessage("error.missmatch"));
           // TODO: add 'error.name.required' key to your resources
       }
       return errors;
   }
}
-->

Source code for SignUpAction

package com.myapp.struts;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;


import signup.SignUp;
import bo.SignUpBOimpl;
import bo.iSignUpBO;

/**
 *
 * @author Murali
 */
public class SignUpAction extends org.apache.struts.action.Action {

   
    private final static String SUCCESS = "success";
    private final static String CANCEL = "cancel";
    SignUp signUpObject = new SignUp();

    /**
     * This is the action called from the Struts framework.
     * @param mapping The ActionMapping used to select this 
     *    instance.
     * @param form The optional ActionForm bean for this request.
     * @param request The HTTP Request we are processing.
     * @param response The HTTP Response we are processing.
     * @throws java.lang.Exception
     * @return
     */
    public ActionForward execute(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,      
                                 HttpServletResponse response)
                         throws Exception {
     SignUpFormBean signUpFormObeject = (SignUpFormBean) form;
        
  
    signUpObject.setFirstName(signUpFormObeject.getFirstName());
    signUpObject.setMiddleName(signUpFormObeject.getMiddleNam());
    signUpObject.setLastName(signUpFormObeject.getLastName());
    signUpObject.setUserName(signUpFormObeject.getUserName());
    signUpObject.setPassword(signUpFormObeject.getPassword());      
    signUpObject.setPresentAddress(signUpFormObeject
                                  .getPresentAddress());
    signUpObject.setPermanentAddress(signUpFormObeject
                                  .getPermanentAddress());
    signUpObject.setContactNumber(signUpFormObeject 
                                  .getContactNumber());
        
        iSignUpBO signUpBOObject = new SignUpBOimpl();
        signUpBOObject.userSignUp(signUpObject);
  
     
        if (isCancelled(request)) {
            return mapping.findForward(CANCEL);
        }
        return mapping.findForward(SUCCESS);

    }
}

Source Code for LoginFromBean:

package com.myapp.struts;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

/**
 *
 * @author Murali
 */
public class LoginFormBean extends org.apache.struts.action.ActionForm {
    
   private String name;
   private String userName;
   private String userPassword;

    /**
     * Get the value of userPassword
     *
     * @return the value of userPassword
     */
    public String getUserPassword() {
        return userPassword;
    }

    /**
     * Set the value of userPassword
     *
     * @param userPassword new value of userPassword
     */
    public void setUserPassword(String userPassword) {
        this.userPassword = userPassword;
    }


    /**
     * Get the value of userName
     *
     * @return the value of userName
     */
    public String getUserName() {
        return userName;
    }

    /**
     * Set the value of userName
     *
     * @param userName new value of userName
     */
    public void setUserName(String userName) {
        this.userName = userName;
    }


   private int number;

   /**
    * @return
    */
   public String getName() {
       return name;
   }

   /**
    * @param string
    */
   public void setName(String string) {
       name = string;
   }

   /**
    * @return
    */
   public int getNumber() {
       return number;
   }

   /**
    * @param i
    */
   public void setNumber(int i) {
       number = i;
   }

   /**
    *
    */
   public LoginFormBean() {
       super();
       // TODO Auto-generated constructor stub
   }

   public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {
       ActionErrors errors = new ActionErrors();
       if (getUserName() == null || getUserName().length() < 1) {
           errors.add("loginUserName", new ActionMessage("error.login.username.required"));
           // TODO: add 'error.name.required' key to your resources
       }
       
       else if (getUserPassword() == null ||getUserPassword().length() < 1) {
           errors.add("loginPassword", new ActionMessage("error.login.password.required"));
           // TODO: add 'error.name.required' key to your resources
       }          
       return errors;
   }
}

Source Code for LoginAction

package com.myapp.struts;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;

import bo.iLoginBO;
import bo.loginBOimpl;
/**
 *
 * @author Murali
 */
public class LoginAction extends org.apache.struts.action.Action {

    private final static String SUCCESS = "success";
    private final static String CANCEL = "cancel";
    private final static String FAILED = "falied";
    /**
     * This is the action called from the Struts framework.
     * @param mapping The ActionMapping used to select this   
     * instance.
     * @param form The optional ActionForm bean for this request.
     * @param request The HTTP Request we are processing.
     * @param response The HTTP Response we are processing.
     * @throws java.lang.Exception
     * @return
     */
    public ActionForward execute(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,        
                                 HttpServletResponse response)
                         throws Exception {
        LoginFormBean loginFormObject = (LoginFormBean)form;
        iLoginBO loginBOObject = new loginBOimpl();
        if( !loginBOObject.authenticate(loginFormObject
                                                 .getUserName() ,  
                         loginFormObject.getUserPassword() )   )
                return mapping.findForward(FAILED);

        if (isCancelled(request)) {
            return mapping.findForward(CANCEL);
        }
        return mapping.findForward(SUCCESS);

    }
}
}

Business logic regading to the login process is seperated in to LoginBO.To get the benifits of loose coupling i used iLoginBO interface and it is implemented in LoginBOimpl class. Following is the code for iLoginBO

iLoginBO Source Code

LoginBOimpl Code

Persistance logic is seperated through DAO pattern

Bellow is the code for LoginDAO

package dao;

import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import signup.SignUp;

/**
 *
 * @author Murali
 */
public class LoginDAO {

    public LoginDAO() {
  
    }
 public boolean searchFor(String userName,String password){
       List<SignUp> signUpList = null; 
        try {
            Session session = HibernateUtil.getSessionFactory().getCurrentSession();
            Transaction tx = session.beginTransaction();
            String queryString = "from SignUp signUp "                     "  where signUp.userName = '"+ userName +"' and  "
" signUp.password = '"+password+"'"   ;
           
            
            Query q = session.createQuery(queryString);
            signUpList = (List<SignUp>) q.list();
              
           
            if( signUpList.size()== 0 )
                return false;
            
        } catch (Exception e) {
            e.printStackTrace();
        }

       return true;
 
 
 }
}

Bellow is the code for SignUpDAO package dao; import org.hibernate.Session; import org.hibernate.Transaction; import signup.SignUp; /** * * @author Murali */ public class SignUpDAO { public SignUpDAO(SignUp signUpObject ) { try { Session session = HibernateUtil.getSessionFactory().getCurrentSession(); Transaction tx = session.beginTransaction(); session.save(signUpObject); tx.commit(); session.close(); } catch (Exception e) { e.printStackTrace(); } } }

I used Hibernate to persist the objects.(Persistence means making the data as permanent data by storing data onto permanent storage like hard disk).

For more details about persisting objects using Hibernate please see my another code sample Struts-Hibernate Integration.

For technical support please contact me at

murali@javamission.com